| Noun | 1. | mortal sin - an unpardonable sin entailing a total loss of grace; theologians list 7 mortal sinssinning, sin - an act that is regarded by theologians as a transgression of God's will superbia, pride - unreasonable and inordinate self-esteem (personified as one of the deadly sins) invidia, envy - spite and resentment at seeing the success of another (personified as one of the deadly sins) acedia, laziness, sloth - apathy and inactivity in the practice of virtue (personified as one of the deadly sins) ire, wrath, anger, ira - belligerence aroused by a real or supposed wrong (personified as one of the deadly sins) luxuria, lust - self-indulgent sexual desire (personified as one of the deadly sins) venial sin - a pardonable sin regarded as entailing only a partial loss of grace | |